package com.sky.service.impl;

import com.alibaba.fastjson.JSONObject;
import com.sky.dto.UserLoginDTO;
import com.sky.entity.User;
import com.sky.exception.LoginFailedException;
import com.sky.mapper.UserMapper;
import com.sky.properties.WeChatProperties;
import com.sky.service.UserService;
import com.sky.utils.HttpClientUtil;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import java.time.LocalDateTime;
import java.util.HashMap;
import java.util.Map;

@Service
@Slf4j
public class UserServiceImpl implements UserService {

    public static final String WX_LOGIN= "https://api.weixin.qq.com/sns/jscode2session";
    @Autowired
    private WeChatProperties weChatProperties;
    @Autowired
    private UserMapper userMapper;

     public User wxLogin(UserLoginDTO userLoginDTO){


        //调用微信接口服务,获取当前用户的openid
        Map<String, String> map =new HashMap<>();
        map.put("appid",weChatProperties.getAppid());
        map.put("secret",weChatProperties.getSecret());
        map.put("js_code",userLoginDTO.getCode());
        map.put("grant_type","authorization_code");
        String json = HttpClientUtil.doGet(WX_LOGIN, map);

        JSONObject jsonObject = JSONObject.parseObject(json);
        String openid = jsonObject.getString("openid");

        //判断是否为空

        if(openid==null){
            throw new LoginFailedException("登录失败");

        }



        //判断当前用户是否为新用户
         User user =userMapper.getByOpenId(openid);



        //如果是新用户，自动完成注册
         if(user==null){

             user=User.builder()
                     .openid(openid)
                     .createTime(LocalDateTime.now())
                     .build();
             userMapper.insert(user);
         }

         return user;



    }

}
